Two officials of Fusion GPS, the political research firm behind the dossier, appeared before the House Intelligence Committee on Wednesday but invoked their Fifth Amendment right against self-incrimination.

The company hired Christopher Steele, a former British spy, to produce the dossier, but Fusion GPS hasn’t said who paid for it.

​Trump and former President Obama were briefed about the contents of the dossier in January, just days before the inauguration, after details in it began filtering out in the media.

Trump blasted the 35-page dossier, which includes unverified claims that he frolicked with prostitutes at a Moscow hotel, during a raucous news conference at the Trump Tower.

He slammed the media outlets that reported on the dossier as “fake news” and a “failing piece of garbage.”

He also blamed the US intelligence community for allowing contents of the dossier to be leaked.

“I think it was disgraceful that the intelligence agencies allowed any information [out] that turned out to be so false and fake,” Trump said. “That’s something that Nazi Germany would have done and did.”

Special Counsel Robert Mueller, who is investigating Russian involvement in the election and any ties to Trump campaign officials, has interviewed Steele.​